beelzeburger
All of class 1-A was excited for Christmas. That is, except for the usually hotheaded Bakugou Katsuki. Something happened to him when he was kidnapped. Something that changed him - and not for the better. Something that his own best friend, Kirishima, does not know about.
Takes place after Bakugou's kidnapping. However, I did not actually watch that far yet - I thank my sister and my best friend for the spoilers - therefore whatever is mentioned of the kidnapping is all entirely my design.